The only question I have between the 494C and the 454C is the 454C seems to list a higher hydraulic flow. Almost 2 gal a minute.
While lift capacity at 24" is only 112 lbs. different.
Pump type
Dual Gear Pump
Dual Gear Pump
Dual Gear Pump
Implement flow
7.66 gpm
9.5 gpm
9.5 gpm
Steering...